Mathematics

Grade10

Easy

Question

# What is extrapolation?

- The use of extra lines in a polar graph to solve a system of equations
- Using a model to estimate a value within the range of known values
- Using a model to estimate a value beyond the range of known values
- Adding an extra variable to solve an equation

## The correct answer is: Using a model to estimate a value within the range of known values

### Extrapolation is Using a model to estimate a value within the range of known values.

### Related Questions to study

Mathematics

### What is interpolation?

### What is interpolation?

MathematicsGrade10

Mathematics

### What are the signs that a residual plot shows a line of best fit ?

i) The residual values are distributed in a clear pattern on both sides of the y-axis.

ii) The residual values are randomly distributed on either side of the x-axis.

iii) The residual values are randomly distributed on either side of the y-axis.

iv) The residual values are clustered close to the x-axis.

### What are the signs that a residual plot shows a line of best fit ?

i) The residual values are distributed in a clear pattern on both sides of the y-axis.

ii) The residual values are randomly distributed on either side of the x-axis.

iii) The residual values are randomly distributed on either side of the y-axis.

iv) The residual values are clustered close to the x-axis.

MathematicsGrade10

Mathematics

### What is a residual ?

i) The difference between the y-value of a data point and the corresponding y-value from the line of best fit.

ii) Actual y-value minus predicted y-value.

iii) All the remaining points that the line of best fit did NOT touch.

iv) The ratio of how many data points are on the line vice not on the line.

### What is a residual ?

i) The difference between the y-value of a data point and the corresponding y-value from the line of best fit.

ii) Actual y-value minus predicted y-value.

iii) All the remaining points that the line of best fit did NOT touch.

iv) The ratio of how many data points are on the line vice not on the line.

MathematicsGrade10

Mathematics

### What does a correlation coefficient of r = -0.8 reveal about the data it describes?

### What does a correlation coefficient of r = -0.8 reveal about the data it describes?

MathematicsGrade10

Mathematics

### What does a correlation coefficient of r = 0.3 reveal about the data it describes?

### What does a correlation coefficient of r = 0.3 reveal about the data it describes?

MathematicsGrade10

Mathematics

### What does it mean when the correlation coefficient is close (but not equal) to zero?

### What does it mean when the correlation coefficient is close (but not equal) to zero?

MathematicsGrade10

Mathematics

### What does it mean when the correlation coefficient is exactly equal to zero?

### What does it mean when the correlation coefficient is exactly equal to zero?

MathematicsGrade10

Mathematics

### What does it mean when the correlation coefficient is close to -1 ?

### What does it mean when the correlation coefficient is close to -1 ?

MathematicsGrade10

Mathematics

### What does it mean when the correlation coefficient is close to 1 ?

### What does it mean when the correlation coefficient is close to 1 ?

MathematicsGrade10

Mathematics

### What is a bivariate data set?

### What is a bivariate data set?

MathematicsGrade10

Mathematics

### Your linear regression function read as follows:

r^{2} = 0.9909817911, r = 0.9954806834, a = 13.55882353, b = 17.58823529

Which is the correlation coefficient of the line?

### Your linear regression function read as follows:

r^{2} = 0.9909817911, r = 0.9954806834, a = 13.55882353, b = 17.58823529

Which is the correlation coefficient of the line?

MathematicsGrade10

Mathematics

### Your linear regression function read as follows:

r^{2} = 0.9909817911, r = 0.9954806834, a = 13.55882353, b = 17.58823529

Which is the y-intercept of the line?

### Your linear regression function read as follows:

r^{2} = 0.9909817911, r = 0.9954806834, a = 13.55882353, b = 17.58823529

Which is the y-intercept of the line?

MathematicsGrade10

Mathematics

### Your linear regression function read as follows:

r^{2} = 0.9944, r = 0.9972, a = 0.776823, b = 4.69062

Which is the slope of the line?

### Your linear regression function read as follows:

r^{2} = 0.9944, r = 0.9972, a = 0.776823, b = 4.69062

Which is the slope of the line?

MathematicsGrade10

Mathematics

### What function determines the equation of a line of best fit?

### What function determines the equation of a line of best fit?

MathematicsGrade10

Mathematics

### How can you evaluate the goodness of fit for a line of best fit for a paired data set?

### How can you evaluate the goodness of fit for a line of best fit for a paired data set?

MathematicsGrade10